TAB A EVENT OPERATION REDWING 1. The INCA device was fired at O956M, 22 June 1956, from atop i. 200-foot tower located on RUJORU Island (PEARL) of ENIWETOK Atoll. "the bomb cloud reached an estimated height of 42,000 feet. <énd cloud moved to the west at approximately 10 knots. The stem The stem zppeared to contain more surface debris than usual for tower shots of ¢imilar magnitude and height of burst, 2. DNA, The fallout forecast was based on a yield an cue SS “ay “ 3. cast. Initial helicopter and P2V surveys verifiad the fallout foreShot island and the lagoon area to the west were the only areas vhich gave appreciable radiation readings, rev aircraft to a range of 100 miles. The cloud was tracked by At 100 miles the cloud was zporoximately 50 miles long and 15 miles across with an average intensity cf 50 mr/hr at 10,000 feet altitude through INCA plus 3 days. 5S. Based on the radiological surveys of the atoll by helicopter end P2v aircraft, reentry hour was amounced as 1200M, 22 June 1956. --4, vit wie ee